CVE-2022-26531

2022-05-2400:00:00

CWE-20

Zyxel

www.cve.org

6.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

7.9 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload.

CNA Affected

[
  {
    "vendor": "Zyxel",
    "product": "USG/ZyWALL series firmware",
    "versions": [
      {
        "version": "4.09 through 4.71",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "USG FLEX series firmware",
    "versions": [
      {
        "version": "4.50 through 5.21",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "ATP series firmware",
    "versions": [
      {
        "version": "4.32 through 5.21",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "VPN series firmware",
    "versions": [
      {
        "version": "4.30 through 5.21",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "NSG series firmware",
    "versions": [
      {
        "version": "1.00 through 1.33 Patch 4",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "NXC2500 firmware",
    "versions": [
      {
        "version": "<= 6.10(AAIG.3)",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "NAP203 firmware",
    "versions": [
      {
        "version": "<= 6.25(ABFA.7)",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "NWA50AX firmware",
    "versions": [
      {
        "version": "<= 6.25(ABYW.5)",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "WAC500 firmware",
    "versions": [
      {
        "version": "<= 6.30(ABVS.2)",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "Zyxel",
    "product": "WAX510D firmware",
    "versions": [
      {
        "version": "<= 6.30(ABTF.2)",
        "status": "affected"
      }
    ]
  }
]